S-90729A414 1/4"-20 x 1 1/4" Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Exceptional mechanical strength delivering 70,000 PSI tensile strength and Rockwell B70 hardness for reliable load-bearing performance
- Precision Class 3A thread fit ensures secure fastening with minimal backlash in demanding applications
- Flush mounting capability with 100° countersink angle and undercut flat head design for seamless surface integration
- Optimized drive engagement through hex drive design providing superior torque transmission and installation efficiency
- Coarse UNC threading enables rapid installation and superior resistance to vibration loosening
- Full regulatory compliance meeting RoHS 3 and REACH standards for global industrial applications
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these 316 stainless steel flat head screws provide critical corrosion resistance where exposure to chemicals, moisture, or extreme temperatures would compromise fastener integrity. The Class 3A thread fit and UNC coarse threading deliver vibration-resistant performance in machinery, structural assemblies, and equipment subjected to dynamic loads. The undercut flat head profile with 100° countersink angle ensures flush mounting without protrusion, making these hex drive screws ideal for applications requiring aerodynamic surfaces or where clearance is limited. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, extending service life in marine, chemical processing, and food industry applications where hygiene and durability are paramount.
Specification Summary & Compliance
Manufactured to inch system specifications with Class 3A thread fit precision and UNC coarse threading standards. Features include 1/4"-20 thread size, 1-1/4" length, and fully threaded design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and chemical restriction adherence for global industrial applications.
